Background: New Psychoactive Substances (NPS) constitute a broad range of hundreds of
natural and synthetic drugs, including synthetic opioids, synthetic cannabinoids, synthetic …

One hundred fifteen Americans die every day from opioid overdose. These overdose
fatalities have been augmented by the increased availability of potent synthetic opioids …

Deaths from opioid use are increasing in the US, with a growing proportion due to synthetic
opioids. Until 2013, sporadic outbreaks of fentanyl and fentanyl analogs contaminating the …

The United States is experiencing an unprecedented epidemic of opioid overdose deaths.
Illicit heroin is an obvious culprit in the crisis and compelling evidence shows synthetic …

Over the past few years, there has been an emerging number of new psychoactive drugs.
These drugs are frequently mentioned as “legal highs”,“herbal highs”,“bath salts” and …

Novel psychoactive substances (NPS) 6 have been a part of the landscape of clinical and
forensic toxicology for over a century, beginning with the introduction of a few new drugs like …

The abuse of novel psychoactive substances (NPS) has been increasing dramatically
worldwide since late 2000s. By the end of 2015, more than 560 NPS had been reported to …

Background: New psychoactive substances (NPS), often referred to as “legal highs” or
“designer drugs”, are derivatives and analogues of existing psychoactive drugs that are …

Novel synthetic opioids (NSO) are an emerging class belonging to new psychoactive
substances (NPS). They include fentanyl (eg, acetylfentanyl, ocfentanil, carfentanil …

In the last two decades, a large increase in opioid overdose death rates has been recorded
in North America. This phenomenon, related to the misuse of prescription opioids, has been …